|Nonresonant acoustic projector project : mechanical 5-50 Hz device provides stable underwater acoustic output with frequency and amplitude controllable and independent of depth - Wilcox, H. A|
"12 June 1980."
Keywords: Underwater acoustics; Ocean engineering
|Radiological Defense. Volume 2. The Principles of Military Defense against Atomic Weapons (Volume 2) - ARMED FORCES SPECIAL WEAPONS PROJECT WASHINGTON DC JOINT CROSSROADS COMMITTEE|
See also Volume 3, AD-A995 334. Original contains color plates: All DTIC and NTIS reproductions will be in black and white
Keywords: Radiobiology; Nuclear explosion testing; Radiation hazards; Safety; Nuclear explosion damage; Airburst; Surface burst; Subsurface; Radiological warfare; Radiation effects; Protection; Decontamination; Military training; NTPR(Nuclear Test Personnel Review); Radiological defense; U/A reports
|Airborne Man-Made Radio Noise Assessment - Roy, T. N|
"15 April 1981."
Keywords: Radio noise; Meteor burst communications
|Fish and Wildlife Habitat Changes Resulting from Construction of a Nine-Foot Channel on Pools 24, 25, and 26 of the Mississippi River and the Lower Illinois River - Sparks, Richard E|
The purpose of this report is to compare the fish and wildlife habitat in Pools 24 and 25 of the Mississippi River and Pool 26 of the Mississippi and Lower Illinois Rivers from before to after construction of the navigation dams. (Author)
Keywords: Ecology; Fishes; Wildlife; Rivers; Habitability; Mississippi river; Illinois; Plankton; Water quality; Vegetation; Illinois River
|Reflection and scattering of acoustic rays computed for parabolic ice keel models - Gordon, D. F|
Keywords: Ice; Sound-waves
|A Comprehensive Evaluation of Three Mussel Beds in Reach 15 of the Upper Mississippi River. [electronic resource] - Whitney, Scott D|
Unionid mussels were collected by quadrat sampling at three mussel beds in Reach is of the Upper Mississippi River (UMR) between July 1994 and September 1995. A total of 7,107 unionids were collected representing 26 species, including the federally endangered Lampsilis higginsi, state endangered Plethohosus cyphyus and Cumberlandia monodonta, and state threatened Ellipsaria lineolata. Mean densities at our study sites ranged from 53,4 to 118.3 mussels/m2...
Keywords: Biology; Ecology; Mussels; Ecology; Data processing; Density; Management; Monitoring; Recruiting; Sampling; Mississippi river; Low rate; Aquatic biology; Growth(physiology)
|Implementing Closed-Loop Control Algorithms for DC-to-DC Converters and ARCP Inverters Using the Universal Controller [electronic resource] - Hanson, Ronald J|
The objective of this thesis is to investigate the use of the Universal Controller to control the DC-to-DC power converter and the Auxiliary Resonant Commutated Pole (ARCP) power inverter. These power electronic devices are central to the development of a DC Zonal Electric Distribution System (DC ZEDS) that is scheduled for application in the twenty-first century surface combatant (SC-21). The development of appropriate closed-loop controls is a key element to this design process...
Keywords: Electric Power Production and Distribution; Electric power distribution; Dc to dc converters; Algorithms; Signal processing; Software engineering; Digital systems; Integrated systems; Theses; Modules(electronics); Control theory; Direct current; Closed loop systems; Control panels; ARCP(AUXILIARY RESONANT COMMUTATED POLE CONVERTER); RESONANT CONVERTERS; POWER CONVERTERS